Wire size, production process fault analysis and processing

1. Wire Analyze the cause of rolling parts not entering, strengthen the inspection and timely treatment of rolling parts head defects;
2. after the installation of the inlet guide, the internal caliper is used to measure the width of the inlet inner cavity; Use light illumination and check whether the inlet guide is in the middle of the hole from the direction of the exit and tighten the guide bolt;
3. check and measure the size of rolled parts with calipers to ensure that the incoming size is correct;
4.  Roll gap size is strictly adjusted according to rolling requirements;
5. check and replace the rolling guide wheel and torsion outlet frequently; Frequently check whether there is iron stick and deposition of iron oxide or debris on the import guide plate;
6. the new pass type should be tested with small materials first.

Stack Wire steel fault refers to the phenomenon of stack steel among rolling mills or between rolling mills.

(1) Causes

A. The incoming size and breaking area of rolled parts are too large; There are surface or internal quality defects of rolled parts;
B, roll pass friction coefficient is not enough, resulting in rolling parts slip;
C. The volume flow per second of the incoming mill is greater than that of the receiving mill;
D. The electrical control system is wrong or out of control.
E. The mechanical running part of the automatic looper system or the photoelectric control instrument is installed incorrectly, out of control or out of order.

(2) Analysis, treatment and preventive measures

A. Adjust the size and area of incoming material to meet the reasonable continuous rolling constant relationship;
B. Dynamic and strict monitoring of the running status of rolled parts and timely adjustment;
C. Ensure the quality of incoming billets; Timely handling of semi-finished rolled parts with quality defects;
D. Check the rotation number, looper system and electrical control system of each rolling mill regularly to ensure the stability and normal running equipment and electric control system.